As I found this topic in Lonely Planet I think I should find out what you can buy with your US$ 1 in Bangkok, Thailand. Anyways US$1 will be more value if you use in other province. (Outside Bangkok)
1. Rice with Thai Omelet dish.
2. 2 Pepsi cans (normal size) in 7/11
3. 2 Energy drink in 7/11
4. 2 pieces of Fresh fruit from shopping cart
5. 2 km for Taxi (Starting rate)
6. 2 cups of Hot Coffee in 7/11
7. 1 loaf of Bread
8. 2 Bottles of Drinking water 1.0 lite
9. 5 Thai pork BBQ with Sticky rice from shopping cart
10. Tuk Tuk from Grand Palace to Wat Pho
Hope this would be useful for all Backpackers who want to walk around Bangkok.
In my opinion, it is an interesting question, I will take part in discussion. I know, that together we can come to a right answer.
Greetings from the Speedy DNS